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ADA4000-2ARZ1 Arkusz danych(PDF) 11 Page - Analog Devices |
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ADA4000-2ARZ1 Arkusz danych(HTML) 11 Page - Analog Devices |
11 / 16 page ADA4000-1/ADA4000-2/ADA4000-4 Rev. A | Page 11 of 16 ) SETTLING TIME Settling time is the amount of time it takes the amplifier output to reach and remain within a percentage of its final value. This is an important parameter in data acquisition systems. Because most bipolar DAC converters have current output, an external op amp is required to convert the current to voltage. Therefore, the amplifier settling time plays a role in the total settling time of the output signal. A good approximation for the total settling time is () ( 2 2 AMP t DAC t Total t S S S + = The ADA4000-1/ADA4000-2/ADA4000-4 settle to within 0.1% of their final value in less than 1.2 μs. The settling time has been tested by using the configuration circuit in Figure 34. The input signal is a 10 V pulse and the output is the error signal for the settling time shown in Figure 33. 200ns/DIV 200mV/DIV 5V/DIV Figure 33. Settling Time Measurement Using the False Summing Node Method ADA4000-1 V+ V– +15V –15V 10V p-p 3 2 1 10kΩ 10kΩ 10kΩ AD828 V+ V– +15V –15V 20kΩ VOUT 1kΩ 8 4 10kΩ V1 0 Figure 34. Settling Time Test Circuit |
Podobny numer części - ADA4000-2ARZ1 |
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Podobny opis - ADA4000-2ARZ1 |
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